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Protein Structure and Function Guide

Proteins are macromolecules composed of amino acid chains linked by peptide bonds. Their structure is correlated with their function. Protein structure can be described at four levels - primary, secondary, tertiary, and quaternary. Primary structure refers to the linear sequence of amino acids. Secondary structure describes recurring patterns like alpha helices and beta pleated sheets. Tertiary structure describes the 3D folding of the polypeptide chain formed by interactions like hydrogen bonds and disulfide bridges. Quaternary structure refers to the arrangement of multiple polypeptide subunits that assemble to form a functional protein.

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NITIN YADAV
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220 views8 pages

Protein Structure and Function Guide

Proteins are macromolecules composed of amino acid chains linked by peptide bonds. Their structure is correlated with their function. Protein structure can be described at four levels - primary, secondary, tertiary, and quaternary. Primary structure refers to the linear sequence of amino acids. Secondary structure describes recurring patterns like alpha helices and beta pleated sheets. Tertiary structure describes the 3D folding of the polypeptide chain formed by interactions like hydrogen bonds and disulfide bridges. Quaternary structure refers to the arrangement of multiple polypeptide subunits that assemble to form a functional protein.

Uploaded by

NITIN YADAV
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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PROTEINS

Prslein Macomolcule haeg


[Jintan Chain Amino Aud linhid
ha Amino Aid pralein
homo polmea yylsin, Rbonucleos
3AA

Ppride bond
C Tewminl
N Tesemin
HN Last A-A
R R

4A A) 2A A

pephid I
Bond Bond

+ Mast abundant
Camponenpuslein
n
Man Cannedi
RuBis Co
Ribulee Biaphosphade Canbonylose- Oymc
abundant patein
Shucue
Sbucusu molecu
Molecla Nae
2 Dinesionl (a0) - Benzene,
chennusby nablhalene

pnaysicss 3Dimnnl suctan

Botein
D Protein structure is corelated with its function.

Smmagined line,

loet AA
lait AA I
(N Teninal A.A] [cTeimin]
AA

C-oon

paitiondmhehnfomitonAecond pralen
Ai d,
Be
Hhen Comes uetve
pon denalwalon ’ a pln. can les cll nuilus encept 1
Secondeny souctune Some þoxdon tsuad ololeddn dhe

pleated Shet
bodon ehen
chain
by Sntemolcutat H

koalin in haie Cbnsin kustein matwal Sik


4Sufor hein nohics s
Collagn Helin 3 polyh hidy chain (each t hondel)’ forn Right hand.
3
Toliang Sbuclunw 3
poit
also hollos
Bato
3 Dimenonf ew

vey necemay, aalogucal actut


prslina Jenzym hang
hau
Anatualein ko Renatuation
hat, aids, Sabe aleohsl te
H Bond
Bond
Vandu walls Soalion
Covale Band
Hycboahosic Band

It contains C,H,O,N,S
Tetiany

Quatunany stwclwe i
Seme plein asembled o
Subunits Multincie paypcptd]
The manne hicl thee Sndidal
bubllnits Mith to each
aoranged
linee luny
Cube
each alhet dhe
fom
This structure refers to spatial relations between its
individual polypeptide chains

these arrchitectwie a
þslein called antornay st.
Adull
haemoloin ’ It is iron containing respiratory pigment.

Bubllnt

has psbytplid cain (


(a) Primary
Polypeptide

(b) Secondary

Alpha- Helix
Beta-plated sheet
(c)
Tertiary -Hydrogen
-Disulphide boná

() Quaternary
functions od Bustein:
Bustein fenctian
(0
Tyfn eneme
Ssuin hemene
Ardwsody
Recepto [Smel,
t enablgo alucou tamtot

mudeinto ectAss l membane


GLUT-4 is a caiv brslein hat enobl gucae ranpout cinto
peent in RBc honsport Oxygen som lengs
te

Da.l.t
pratein potein hat
in RBc duonshot Jo Vaisu

Botein ght te
porotein. puslein hat
called B

Some puoleins homnes lhe


Snsutin Secustel Bcell Beent
ponendase.
Metabolm
Sone
They old.all chemiiel Ruackon dhat
puant in pancreatii Tite )
HYDROLYSIS OF PEPTIDE BOND

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